Signal transmission/reception device and signal transmission/reception method

FIELD: telecommunications.

SUBSTANCE: invention relates to ultra high definition (UHD) video signal transmitting and receiving device and method. Disclosed is signal transmission/reception method and device, wherein method is compatible with existing bit depth 8-bit mode based on high-definition (HD) with supporting of bit depth 10-bit mode based on UHD, and includes: video data multiplexing or reverse multiplexing, which can be displayed in any bit depth colour gamma from plurality of bit depths, and signalling information, relating to displaying, so, that displaying is performed in any bit depth colour gamma from plurality of bit depths; and multiplexed or back multiplexed video data and signalling information processing.

EFFECT: technical result is enabling possibility of video signal displaying, having different bit depths, according to receiver operating characteristics.

12 cl, 29 dwg

 



 

Same patents:

FIELD: physics.

SUBSTANCE: loop filter 6 includes a region classification unit 12 for extracting an estimate value of each of the regions which make up a local decoded image in order to classify each of the regions into a class belonging to the region, according to the estimate value, and a unit 13 for forming and processing a filter for each class belonging to one or more regions from the regions which make up the local decoded image, forming a Wiener filter which minimises the error arising between the input image and the local decoded image in each of the one or more regions belonging to a class, in order to compensate for the distortion on the one or more regions using the Wiener filter.

EFFECT: high image quality.

3 cl, 18 dwg

FIELD: physics, video.

SUBSTANCE: invention relates to controlling filtering and particularly to controlling deblocking filtering on block boundaries in a video frame. A block-specific filter decision value is calculated for a pixel block in a video frame. If the block-specific filter decision value is below a block-specific threshold, each line or column in the block is individually processed in order to select between a strong and a weak deblocking filter. A respective line-specific filter decision value is thereby calculated for each row or column in the block and compared to a line-specific threshold. If the line-specific filter decision value calculated for a row or column is below the line-specific threshold a strong deblocking filter is selected for the row or column, otherwise a weak deblocking filter is instead selected to combat any blocking artefacts.

EFFECT: high efficiency of deblocking filtering by eliminating or reducing blocking artfacts.

11 cl, 11 dwg

FIELD: radio engineering, communication.

SUBSTANCE: device contains a receiver receiving and syntactically analyzing a bit flow of a coded image; a processor forming a coding unit which is included into a maximum coding block which has hierarchical structure by means of use of the information which indicates this hierarchical structure, syntactically analyzed from the accepted bit flow and forms one sub-block for prediction of a coding block from the coding block, by means of use of information on blocks of a prediction of the named coding block, an image recovery decoder.

EFFECT: higher efficiency of decoding of high-resolution images by determining the depth of the coding unit and the operating mode of the encoding tool according to data characteristics of the image.

5 cl, 8 tbl, 23 dwg

FIELD: information technology.

SUBSTANCE: in the method, after using a modified LBP technique, calculation of LBP code values and search for equivalent LBP code values are performed in rank and domain regions, formed by the same number of pixels located on a circle, where the radius of the circle of the domain region is greater than the radius of the circle of the rank region; the number of pixels, the radius of the circle and the coordinates of the position of the centre pixel for the rank and domain regions are stored.

EFFECT: faster encoding through selection of image characteristics which describe the domain and rank regions.

4 dwg

FIELD: physics.

SUBSTANCE: adaptation is performed by rearranging fragments of discrete cosine transform (DCT) coefficients obtained after two-dimensional DCT on the time axis and subsequent one-dimensional DCT such that the total number of non-zero transform coefficients after three-dimensional DCT is less than the number of non-zero DCT coefficients obtained after three-dimensional DCT without rearranging two-dimensional DCT fragments. In the disclosed method, after forming a domain measuring nnn pixels, DCT coefficients are calculated on spatial coordinates x and y for each fragment of the domain. The fragments are then rearranged in the form of a rearrangement vector and a time DCT operation is performed. The DCT coefficients are sampled, encoded and transmitted over a communication channel with the rearrangement vector. At reception, said procedures are performed in reverse order and the original video stream is restored.

EFFECT: high degree of compression of video data with a given image reconstruction error at reception owing to adaptation to variation of static properties of images.

3 cl, 9 dwg

FIELD: information technologies.

SUBSTANCE: method of coding of video data is offered which comprises the obtaining from the coded stream of bits of one or more units of network abstraction level (NAL) for each component of view from a set of components of view of the coded video data where each component of view from the set of components of view corresponds to the common temporary location and where one or more NAL units encapsulate at least a part of the coded video data for the respective components of view and comprise an information specifying the sequence of decoding of the respective components of view. The method also comprises the received information separate from NAL units specifying the relations between the view identifiers for these views and sequence of decoding of components of view. One or more NAL units also comprise the information specifying, whether the first view component of the first view as the reference for prediction between the views of the second component of view for the second different view is used.

EFFECT: coding efficiency improvement.

68 cl, 18 tbl, 12 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering. A method of coding video data comprises maintaining a plurality of context models for entropy coding transform coefficients of the video data, wherein the plurality of context models includes one or more context models that are each used for a different transform unit size and at least one joint context model used for two or more transform unit sizes; selecting the joint context model shared by a first transform unit and a second transform unit; selecting contexts for the transform coefficients associated with one of the first transform unit or the second transform unit according to the joint context model; and entropy coding the transform coefficients of said one of the transform units using context adaptive binary arithmetic coding (CABAC) based on the selected contexts.

EFFECT: reduced amount of memory needed to store contexts and probabilities on video coders and decoders.

34 cl, 9 dwg

FIELD: physics, video.

SUBSTANCE: invention relates to image processing means. The method includes creating a plurality of frames of a picture and related prediction reference frames; for each frame and related prediction reference frame, calculating the intensity value and the colour value in a first colour domain; for each frame and related prediction reference frame, calculating weighted prediction gains; if said gains are non-negative, determining that a global transition with zero offset is occurs in a second colour domain; and if not all of said gains are non-negative, determining that a global transition with gradual change in illumination does not occur.

EFFECT: high efficiency of an image display means when encoding and processing video.

28 cl, 16 dwg

FIELD: physics, video.

SUBSTANCE: invention relates to the field of digital signal processing and, in particular, to the field of video signal compression using the movement compensation. The coding method includes the obtaining of target number of movement information predictors to be used for the coded image section and generation of the set of movement information predictors using the obtained target quantity. The set is generated by means of: obtaining of the first set of movement information predictors, each of which is connected with the image section having the pre-set spatial and/or time ratio with the coded image section; modifications of the first set of movement information predictors by removal of the duplicated movement information predictors for obtaining of the reduced set of movement information predictors containing the first number of movement information predictors, and each movement information predictor from the reduced set differs from any other movement information predictor from the reduced set; comparisons of the first number of movement information predictors with the target quantity obtained, and if the first quantity is less than the target quantity, obtaining of the additional movement information predictor and its addition to the reduced set of movement information predictors.

EFFECT: decrease of spatial and time redundancies in video flows.

26 cl, 8 dwg

FIELD: physics, video.

SUBSTANCE: invention relates to a broadcasting system for transmitting a digital television program, particularly a transmission device and a transmission method, in which content which meets needs can be acquired. A server generates a script PDI-S for obtaining a user side PDI-A representative of an answer of a user to a question about user preferences; generates launch information for executing the PDI-A; and transmits the launch information and PDI-S in response to the delivery of broadcast content, and transmits to the client in response to the delivery of reference content a provider side PDI-A representative of an answer set by a provider to the question. The client executes the PDI-S based on detection of launch information and carries out matching between the user side PDI-A and the provider side PDI-A to determine acquisition of reference content delivered by the server.

EFFECT: facilitating delivery of content to a client which satisfies the needs thereof at that time.

10 cl, 48 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to block transform-based encoding. The disclosed digital multimedia data encoder/decoder includes signalling various modes relating to computational complexity and precision during decoding. The encoder may send a syntax element indicating arithmetic precision (e.g., using 16- or 32-bit operations) of the transform operations performed during decoding. The encoder may also signal whether to apply scaling to the decoder output, which provides a wider dynamic range of intermediate data during decoding, but adds to computational complexity due to the scaling operation.

EFFECT: controlling computational complexity and precision of decoding through a digital multimedia data codec.

27 cl, 6 dwg

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to computer engineering. An image encoder which generates a bit stream based on input of a colour image formed from a plurality of colour components through compression-encoding of the colour image in units of regions, obtained by dividing the colour image into predetermined regions, wherein the image encoder includes: an encoding unit which encodes identification information for sharing the intra-prediction mode, which indicates if regions serving as encoding units are prediction-encoded based on the intra-prediction mode which is shared for each colour components, or not, and which encodes the intra-prediction mode shared for each colour component if decoding is carried out using the intra-prediction mode shared for each colour component.

EFFECT: high optimality of encoding the signal of a moving image.

4 cl, 86 dwg

FIELD: information technology.

SUBSTANCE: disclosed is an image encoder, having a predicted image generating unit that generates a predicted image in accordance with prediction modes; a prediction mode judging unit that evaluates prediction efficiency of a predicted image from the predicted-image generating unit to judge a predetermined prediction mode; and an encoding unit that subjects the output signal of the prediction mode judging unit to variable-length encoding. A predetermined control signal-based judging unit determines which of a common prediction mode and a separate prediction mode is used for corresponding colour components of the input image signal and multiplexes control signal information into a bit stream, multiplexes, when the common prediction mode is used, common prediction mode information and multiplexes, when the common prediction mode is not used, prediction mode information for each of the colour components.

EFFECT: high optimality of encoding a moving image.

8 cl, 86 dwg

FIELD: information technologies.

SUBSTANCE: decoding stage is carried out to decode the first identifying information, which indicates whether signals of appropriate colour components are independently coded, and to decode the second identifying information in the case when the first identifying information indicates that signals of appropriate colour components are coded independently, the second identifying information indicates whether all colour components are intra-coded, besides, in the case when the first identifying information indicates that signals of the appropriate colour components are coded independently, and the second identifying information indicates that all images of appropriate colour components are intra-coded, the decoding stages generates a decoded image, in which performance of deblocking filtration is off at each border between blocks serving as elements of conversion and quantisation.

EFFECT: improved optimality and efficiency of decoding in case when coded signals of a dynamic image do not have a difference in respect of a number of counts between colour components.

15 dwg

FIELD: physics, communication.

SUBSTANCE: invention relates to picture digital signal encoder/decoder in appropriate chroma signal format. Encoder comprises module to divide input bit flow into appropriate colour components, module to divide colour component input signal into blocks so that coding unit area signal can be generated, module to generate P-frame for said signal, module to determine prediction mode used for encoding by efficiency P-frame prediction, module to encode prediction error for encoding difference between predicted frame corresponding to prediction mode as defined by appropriate module and colour component input signal, and module for encoding with variable length of prediction mode code, output signal of prediction error encoding module and colour component identification flag indicating colour component wherein belongs said input bit flow resulted from division of colour components.

EFFECT: higher efficiency.

2 cl, 98 dwg

FIELD: information technology.

SUBSTANCE: coding device includes a colour component separating module for dividing the input bit stream into corresponding colour components, a module for dividing the input signal of the colour component into blocks in order to generate a signal of the coding unit region; a predicted image generating module for generating the predicted image for that signal, a determination module for determining the prediction mode used for coding according to prediction efficiency of the predicted image, a prediction error coding module for coding the difference between the predicted image, which corresponds to the prediction mode determined by the determination module, and the input signal of the colour component, and a coding module for variable length coding of the prediction mode, the output signal from the prediction error coding module and colour component identification flag which indicates the colour component belonging to the input bit stream as a result of colour component separation.

EFFECT: flexible selection of internal prediction mode information, which ensures optimum coding when there are different definitions of colour space.

6 cl, 98 dwg

FIELD: information technology.

SUBSTANCE: disclosed is a method of coding video data, where a video signal consisting of two components is to be coded, and said method involving: an operation for setting the downsampling coefficient which is set for a specific signal component in a frame according to characteristics in the frame, and an operation for generating a video signal to be coded via downsampling of a specific signal component in a frame according to the set downsampling coefficient. A frame can be divided into partial regions according to localised characteristics in the frame, and the downsampling coefficient for a specific signal component in these partial regions can be set according to characteristics in each partial region.

EFFECT: low code volume during coding owing to introduction of processing, where adaptive downsampling is performed for each frame or for each region inside each frame.

17 cl, 18 dwg

FIELD: information technology.

SUBSTANCE: image encoder includes the following: a predicted-image generating unit that generates a predicted image in accordance with a plurality of prediction modes indicating the predicted-image generating method; a prediction-mode judging unit that evaluates prediction efficiency of a predicted image output from the predicted-image generating unit to judge a predetermined prediction mode; and an encoding unit that subjects the output signal of the prediction-mode judging unit to variable-length encoding. The prediction-mode judging unit judges, on the basis of a predetermined control signal, which one of a common prediction mode and a separate prediction mode is used for respective colour components forming the input image signal, and multiplexes information on the control signal on a bit stream.

EFFECT: high optimality of encoding the signal of a moving image.

4 cl, 86 dwg

FIELD: information technologies.

SUBSTANCE: it is proposed to represent each colour pixel with three colour components, every of which is initially coded with ten bits. Coding is carried out by breaking the initial colour video frame into non-covering space units, and subsequent separation of a bit representation of each colour component of a pixel into a senior part, made of more than one senior bit, and a junior part made of at least one junior bit, then separate coding of the senior and junior parts, besides, coding of the senior part is carried out by application of more than one coding method, every of which takes into account pixel-to-pixel connections only within the limits of the processed space unit, estimation of a coding error, selection of a coding method, giving the smallest error, sending data on the method of coding by means of a prefix code transfer, coding of the junior part, which is carried out by averaging of more than one value, included into the junior part, besides, dimensions of the averaging areas within the limits of the junior part, a number of bits, fixed in advance, is set as required for a compact representation of initial space colour unit.

EFFECT: efficient compression of a colour high-quality image without visible visual distortions.

25 cl, 29 dwg, 13 tbl

FIELD: information technologies.

SUBSTANCE: in television system, comprising transmitting and receiving sides, the following components are added at the transmitting side - the second photoelectric converter /PEL/, second three analogue-to-digital video signals, second three coders, at the receiving side - the second channel of processing of codes of signals R2, G2, B2 of the second TV channel and the second flat parallel screen.

EFFECT: digital TV broadcasting of two TV channels in parallel by television system with application of their codes signals division by a polar criterion.

18 dwg, 1 tbl

FIELD: radio communications.

SUBSTANCE: system, at transferring side, additionally has third code generator, in transceiver - third channel, at receiving side - third receiving line for processing video signals codes, including block for receiving radio signal, frequency amplifier, bipolar amplitude detector and codes processing channel, in each code processing channel for video signals ER, EG, EB block for processing codes and codes accumulator are inserted, radiation modulation block is made with three hundred channels, into channel for forming control pulses frequency synthesizer and doubling device for frame synchronous pulses are inserted.

EFFECT: higher efficiency.

18 dwg, 2 tbl

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